| Item Name | Bolt Close Tolerance |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5306 Bolts |
| National Item Identification Number (NIIN) | 01-570-0303 (015700303) |
| NCB Code | USA (01) |
| Manufacturer | National Aerospace Standards Com |
| MRC | Criteria | Characteristic |
|---|---|---|
| AATB | Width Between Flats | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM |
| AAJD | Thread Class | 3A |
| ASXK | Hole Quantity | 3 |
| MRC | Decoded Requirement | Clear Text Reply |
| AASB | Fastener Length | 0.783 INCHES NOMINAL |
| AASA | Thread Length | 0.345 INCHES NOMINAL |
| AAUR | Grip Diameter | 0.189 INCHES NOMINAL |
| BQDM | Hole Type | DRILLED |
| MDCL | Material Document And Classification | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| ANEE | Grip Length | 0.438 INCHES NOMINAL |
| THSD | Thread Series Designator | UNJF |
| MATT | Material | IRON ALLOY 660 OVERALL |
| CMLP | Thread Quantity Per Inch | 32 |
| AHYM | Nominal Thread Diameter | 0.190 INCHES |
| AASU | Head Height | 0.110 INCHES MINIMUM AND 0.125 INCHES MAXIMUM |
| AAUB | Hole Diameter | 0.046 INCHES MINIMUM AND 0.056 INCHES MAXIMUM |
| AAJF | Thread Direction | RIGHT-HAND |
| CRHC | Hole Configuration Style | HEXAGON CORNERS |
| AASK | Head Style | DISHED HEXAGON |
| Relevant Components for NSN - 5306-01-570-0303, 5306015700303 | ||||
| 5320-01-093-5687 (5320010935687) | 5340-00-286-8500 (5340002868500) | 5310-00-797-4430 (5310007974430) | 5331-01-548-6940 (5331015486940) | |
| 5340-01-389-2408 (5340013892408) | 5340-01-499-3481 (5340014993481) | 5310-01-418-9739 (5310014189739) | 5320-01-419-8697 (5320014198697) | |
| 5340-01-681-6722 (5340016816722) | 5340-01-620-4639 (5340016204639) | 5340-01-481-2087 (5340014812087) | 5331-01-097-0869 (5331010970869) | |
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